Frost dates in Chewelah, WA
The average last spring frost in Chewelah is around May 24 and the first fall frost is around September 11. That gives Chewelah an average growing season of about 110 days.
Last spring frost
| Early (10% chance after) | May 4 |
|---|---|
| Average (50%) | May 24 |
| Late (90%) | June 30 |
First fall frost
| Early (10%) | August 17 |
|---|---|
| Average (50%) | September 11 |
| Late (90% chance before) | October 1 |